Chrysanthemum plant named ‘Zanmutang’

ABSTRACT

A  chrysanthemum  plant named ‘Zanmutang’ characterized by its small sized blooms with yellow ray florets and prolific branching; natural season flower date September 20 (week 38) blooming for a period of 4 weeks.

Botanical designation: Chrysanthemum×morifolium Ramat.

Cultivar denomination: ‘Zanmutang’.

RELATED CULTIVARS

This new plant cultivar ‘Zanmutang’ is related to ‘Zanmudande’ (U.S.Plant patent application Ser. No. 13/200,327), a sibling obtained fromthe same cross with parent plants.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar ofChrysanthemum plant, botanically known as Chrysanthemum×morifoliumRamat., commercially known as a garden mum, and hereinafter referred toby the cultivar denomination ‘Zanmutang’. ‘Zanmutang’ is a product of abreeding and selection program for outdoor pot mums (garden mums) whichhad the objective of creating new cultivars with a double typeinflorescence, a natural season flower date around September 20 (week38), blooming for a period of 4 weeks. ‘Zanmutang’ is a seedlingresulting from a cross of the female parent id 21570 with the maleparent id 23262. Both parents are unpatented plants. Plants of the newcultivar ‘Zanmutang’ differ from plants of the female parent in thefollowing characteristics. (1) Plant vigor and (2) Natural season flowerdate. (1) Plants of the seedling are more vigorous than plants of thefemale parent. (2). Plants of the seedling flower earlier in season thanplants of the female parent.

Plants of the new cultivar ‘Zanmutang’ differ from plants of the maleparent in the following characteristics. (1) Plant vigor and (2) Naturalseason flower date. (1) Plants of the seedling are less vigorous thanplants of the male parent. (2). Plants of the seedling flower earlier inseason than plants of the male parent.

The new and distinct cultivar was discovered and selected as a floweringplant by Wilhelmus Bernardus Blom on a cultivated field in Rijsenhout,The Netherlands in 2005. The first act of asexual production of‘Zanmutang’ was accomplished when vegetative cuttings from the initialselection in 2005 were propagated further in a controlled environment inRijsenhout, The Netherlands. The new cultivar has been found to retainits distinctive characteristics through successive propagations.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention of a new and distinct variety of Chrysanthemum isshown in the accompanying drawings, the color being as nearly true aspossible with color photographs of this type.

FIG. 1 shows a plant of the cultivar in full bloom.

FIG. 2 shows the various stages of bloom of the new cultivar.

FIG. 3 shows the various stages of foliage of the new cultivar.

DESCRIPTION OF THE INVENTION

The observations and measurements were gathered from plants grown outdoor in Rijsenhout, The Netherlands under natural day length andtemperature and planted in week 23 in 2005. The natural blooming date ofthis crop was September 20 (week 38). The average height of the plantswas 35 cm. No growth retardants were used. No tests were done on diseaseor insect resistance or susceptibility. No tests were done on cold ordrought tolerance. This new variety produces small sized blooms withyellow ray florets blooming for a period of 4 weeks.

From the cultivars known to inventor the most similar existing cultivarin comparison to ‘Zanmutang’ is ‘Zanmusundance’ (U.S. Plant Pat. No.21,163.). When ‘Zanmusundance’ and ‘Zanmutang’ are being compared thefollowing difference are noticed: (1) Inflorescence shape. And (2)Number ray florets. (1) The decorative type inflorescences of‘Zanmutang’ are more round shaped, while those of ‘Zanmusundance’ aremore flat. (2). The number of ray florets is higher in ‘Zanmutang’ thanin ‘Zanmusundance’.

The following is a description of the plant and characteristics thatdistinguish ‘Zanmutang’ as a new and distinct variety.

The color designations are taken from the plant itself. Accordingly, anydiscrepancies between the color designations and the colors depicted inthe photographs are due to photographic tolerances. The color chart usedin this description is: The Royal Horticultural Society Colour Chart,edition 2001.

TABLE 1 Detailed Botanical Description Bud Size Small; cross-section 5mm, height 4 mm Shape Round Texture Pubescent Outside Color Greyed-green191A Phyllaries Number 20, arranged in 3 rows Shape Elliptic Apex AcuteBase Truncate Margin Entire Color Upper surface: Green 137C Lowersurface: Green 137D Length and width 4 mm; 2 mm Texture PubescentInflorescences Type Double Height 1.2-1.3 cm Diameter   3 cm Pedunclelength 5.6-6 cm Peduncle color Green 137C Peduncle diameter 1.5 mmPeduncle texture Pubescent Number per branch Approx. 5 inflorescencesDuration of flowering   4 weeks Seeds Produced in small quantities,ovate, Greyed-brown 199A, length 1.5 mm, diameter 0.5 mm Fragrance Faintchrysanthemum odor Color Center of inflorescence Immature stage: Yellow13B Mature stage: Yellow 7A Color of upper surface of the ray- Yellow13C florets Color of the lower surface of the Yellow 11C ray-floretsTonality from Distance A garden mum with yellow blooms Color of theray-florets after aging Yellow 13c of the plant Ray florets TextureUpper and lower surface smooth Number  230-240 Shape Elliptic ApexDentate Base Attentuate Cross-section Flat Longitudinal axis of majorityStraight Length of corolla tube 4 mm Ray-floret margin Entire Ray-floretlength  1.2-2 cm Ray-floret width   3-4 mm Ratio length/width High Discflorets Disc diameter in mature 2-4 mm inflorescences Distribution ofdisc florets Scarce Shape Tubular Color Yellow-green 145C at base toGreen Yellow 1D at apex Length 3.8 mm Diameter 2.5 mm Receptacle ColorYellow-green 145D Shape Conical raised Height 4 mm Diameter 3 mmReproductive Organs Androecium Present on only disc florets Stamenlength 3 mm Stamen color Yellow-green 144A Anther color Yellow 3A PollenPresent Pollen color Yellow 13A Gynoecium Present on both ray and discflorets Style color Yellow-green 154C Style Length 3 mm Stigma colorYellow 7A Stigma Width 1 mm Ovary Enclosed in calyx Plant Form Grown asa spray type pot mum, outdoor raised and mounded Growth habit Sphericalshape Growth rate Medium Height 35 cm Width 50-55 cm Stem ColorGreyed-brown 199A Stem Strength Strong Stem Brittleness Brittle StemAnthocyanin Coloration Not observed Internode length  2-2.5 cm Length oflateral branch From top to bottom 18-20 cm Lateral branch color Green137 C Lateral branch, attachment Brittle Lateral branch diameter  2 mmBranching (average number of Prolific with 7 breaks after pinchinglateral branches) Natural season blooming date September 20 (week 38)Foliage Leaf color Upper side: Green 139A to 139B Lower side: Green 137DColor midvein Upper side: Yellow-green 147D Lower side: Yellow-green148D Size Small; length 1.5-3 cm, width 1- 2.5 cm Quantity (number perlateral 17-19 branch) Shape Elliptic Texture upper side Sparselypubescent Texture under side Pubescent Venation arrangement PalmateShape of the margin Smooth to serrated Shape of Base of Sinus BetweenRounded Lateral Lobes Margin of Sinus Between Lateral Diverging LobesShape of Base Attenuate Apex Mucronulate Petiole length  3-4 mm Petiolediameter   1 mm Petiole color Yellow-green 147D

TABLE 2 Differences with the comparison varieties ‘Zanmutang’‘Zanmusundance’ Inflorescence height  1.2-1.5 cm 0.5 cm Number rayflorets  230-240 Approx. 140

I claim:
 1. A new and distinct Chrysanthemum plant named ‘Zanmutang’ asdescribed and illustrated.